As far as the flash is concerned, you might want to have the "home" state come up after the user enters the site. It didn't happen for me.
You can check out a real working idea here: UMBC Mama's Boys
The above page will redirect based upon your screen resolution and play a movie big enough to fill your entire screen. Eventually I will allow for manual redirection in case they do not want to view it in fullscreen.
I found the script for redirection by googling, and just adapted.
I read somewhere online that about 50% of surfers are using an 800x600 screen resolution, and everyone else is higher. So 800x600 would be a good minimum to work to. And 1600 x 1200 a god max; although, as new screens & adaptors come out, the resolution keeps getting greater and greater. I know you have to watch for the laptops with "stretched" screens that operate in a resolution of 1900x1200 natively.
Hope i was semi-helpful.